Implement Discard and EnsureBackbufferCHROMIUM using command buffer instead of IPC.

gpu/command_buffer/common/gles2_cmd_format_test_autogen.h

Index: gpu/command_buffer/common/gles2_cmd_format_test_autogen.h
diff --git a/gpu/command_buffer/common/gles2_cmd_format_test_autogen.h b/gpu/command_buffer/common/gles2_cmd_format_test_autogen.h
index fa73330f1897472a608aca290fad4bd30c251b3c..9058e2d242e3d2ca34c68624f74d79aeb5c1f508 100644
--- a/gpu/command_buffer/common/gles2_cmd_format_test_autogen.h
+++ b/gpu/command_buffer/common/gles2_cmd_format_test_autogen.h
@@ -3756,5 +3756,27 @@ TEST_F(GLES2FormatTest, VertexAttribDivisorANGLE) {
       next_cmd, sizeof(cmd));
 }
 
+TEST_F(GLES2FormatTest, DiscardBackbufferCHROMIUM) {
+  DiscardBackbufferCHROMIUM& cmd = *GetBufferAs<DiscardBackbufferCHROMIUM>();
+  void* next_cmd = cmd.Set(
+      &cmd);
+  EXPECT_EQ(static_cast<uint32>(DiscardBackbufferCHROMIUM::kCmdId),
+            cmd.header.command);
+  EXPECT_EQ(sizeof(cmd), cmd.header.size * 4u);
+  CheckBytesWrittenMatchesExpectedSize(
+      next_cmd, sizeof(cmd));
+}
+
+TEST_F(GLES2FormatTest, EnsureBackbufferCHROMIUM) {
+  EnsureBackbufferCHROMIUM& cmd = *GetBufferAs<EnsureBackbufferCHROMIUM>();
+  void* next_cmd = cmd.Set(
+      &cmd);
+  EXPECT_EQ(static_cast<uint32>(EnsureBackbufferCHROMIUM::kCmdId),
+            cmd.header.command);
+  EXPECT_EQ(sizeof(cmd), cmd.header.size * 4u);
+  CheckBytesWrittenMatchesExpectedSize(
+      next_cmd, sizeof(cmd));
+}
+
 #endif  // GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_TEST_AUTOGEN_H_